LUCANUS AND HISTER. 



39 



consequently, in using his words", I can be in no danger 

 of being charged with an attempt to force Nature, as it 

 were, to submit to what may hereafter be termed a tlieory 

 of entomology. 



1. Histeris "Antennae thorace bre- 

 viores, ad basin mandibularum 

 msertae; fractae. Articulo basi- 

 lar! maximo, conico, ad extima 

 crassiori, incurvo; octavo clavae 

 3-articulatEe basin efficiente." 



2. Histeris " Labrum exsertum, 

 crustaceum, transverso qua- 

 dratum." 



3. Histeris " Mandibulse corneae, 

 validae, crassse, processu inter- 

 no bidentato." 



4. Histeris " Palpi filiformes, arti- 

 culo ultimo longiore, subcylin- 

 drico, obtiiso; maxillares paulo 

 longiores." 



^ 5. Histeris " Maxillae laciinis dua- 

 bus inaeqiialibus, marginibus 

 internis fimbriato-hirsutissi- 

 mis; externa majore, subovato- 

 trigona, lacinia interna ungue 

 minuto, corneo, bifido, aut du- 

 plici genere constructo." 

 6. Histeris " Mentum quadratiim 

 marginis siiperi medio emar- 

 ginato." 



1 . Lucanidarum ''Antennae thorace 

 non longiores, fractae ; Capitido 

 e quinqiie, quatuor aut tribus 

 lamellis composito." 



Lucani " Antennce articulo pri- 

 mo longissimo, incurvo, ad 

 apicem Scepius crassiore." 



2. Passali " Labrum ciiistaceum, 



transverso-quadratum, penitus 

 exsertum." 



3. Lucanidarum " Mandibulffi Cor- 

 neae, validissimae, porrectae, 

 dentatae." 



4. Lucanidarum "Palpi filiformes, 

 articulo ultimo subovali aut 

 subcylindrico ; maxillares lon- 

 giores." 



5. Passali "Maxillae processibus 

 cornels, spinosis, interne den- 

 tatis ; apicali validiore, subtri- 

 gono, interno dentibus duobus 

 aut unico." 



6. Passali " Labium quadratum, 

 mento profunde emarginato." 



Gm. CrusLel Ins. vol. ii. p. 46, 130, 131, 136. 



